Improvement in nut-locks



2 Sheets-Sheet 2'. G. W. SMITH & J. H. GILL.

H NUT-LOCK.

No.1'77,665. I Patented May 23,1876.

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UNIT D STATES PATENT OEEIcE.

GEORGE W. SMITH AND JAMES H. GILL, OF MOUNT PLEASANT, OHIO.

IMPROVEMENT IN NUT-LOCKS.

Specification forming partof Letters Patent No. 177,665, dated May 23,1876; application filed February 16, 1876.

the county of Jefferson and State of Ohio,v

have invented certain new and useful Improvements in Nut'Locks; and wedo hereby declare that the following is a full, clear, and

exact description thereof, which will enable others skilled in the artto which it pertains to make and use the same, reference being had tothe accompanying drawing, and to the letters of reference markedthereon, which form a part of this specification.

Our invention relates to improvements in nut-locks, the nature of whichwill be fully explained by reference to the drawings, in which- Figure 1represents a sectional view, and Fig. 3 a plan, of portion of a beamwith a bolt applied thereto, the nut of which is locked according to ourinvention. Figs. 2, 4, and 5 show detail views of parts separately.Figs. 6, 7, 8, 9, 10, 11, 12, and-13 show detail views and slightmodifications of our invention as represented by Figs. 1 to 5.

In each of the views similar letters of reference are employed toindicate corresponding parts wherever they occur.

Arepresents abeam or timber, and B a I bolt passing therethrough. O is aface-plate applied to the side or edge of the timber A, and providedwith a central aperture, 0, formed with a female thread, adapted toreceive and hold a male thread formed on the exterior surface of ahollow shank, D formed on the under side of a retaining-plate, D, theupper surface of which is, by preference, perfectly flat, and providedwith projecting lugs D adapted to be received within notches or recessesE in a locking-plate, E, formed with a central apertui; nut F.

.The operation of the device-is as follows: The bolt A is first passedinto position, with its threaded end passing through the centralaperture 0 of the plate 0. The retainingplate D is then screwed intoposition, as shown by Fig. 1. The nut F is then applied, after which thelocking-plate is then dropped into position, as shown clearly by Fig. 3.This having been done, the upper ends of the lugs D are bent or turnedover the lockingplate E, as shown by Fig. 1, when the whole will besecurely held together.

In Figs. 6, 7, 8, and 9, we have shown a e, E adapted to receive theslight modification of our invention. In this case, in place ofemploying a hollow shank, D, on the retaining-plate D, We employ simplyprojections D or segments of a shank, by preference formed withoutscrew-threads, and adapted to fit into a socket or hole, 0, formed inthe surface of the beam or timber A, or in a plate applied thereto. Inother respects the device is identical in construction.

and operation to that shown by the previous figures.

In Figs. 10, 11, 12, and 13, we have shown serted in holes or recesses Oin the timber formed previously, or by forcing the lugs into thesurface, or in a face-plate applied to the surface of the timber, as maybe found most convenient.

The operation of the devices in other respect-s is similar to themodifications previously described.

Having thus described our invention, What we claim, and desire to secureby Letters Patent, is-

1. A retaining-plate, D, having a threaded shank, D and lugs orprojections D sub stantially as and for the purpose described.

2. The combination, with a retainingplate, D, having a threaded shank, Dand lugs or projections D, of the locking-plate E, formed with notchesor recesses E and a central aperture, E substantially as .and for thepurpose described.

3. The combination, with a retaining-plate, D, formed with alternatepairs or series of lugs D -on opposite sides thereof, of alocking-plate, E, formed with notches or recesses E and a centralaperture, E substantially as and for the purpose specified.

In testimony that we claim the foregoing as our own we hereto affix oursignatures in presence of two witnesses.

GEORGE W..SMITH. J. H. GILL. Witnesses:

GEORGE W. TWEEDY, NOBLE 0. BROWN.

